AQUA HOT / HYDRO HOT  WPX-378-313 Bearing repair kit. This is an UPDATED bearing kit. We replace the bearing Webasto uses with ceramic bearing with Viton seals. These bearing are made in Sweden for military drones. We have been using these bearings for years now in our own fleet of trucks without a failure. We also add in some other parts you will need to do this job correctly. We add the 4 grommets and the blower housing O ring. Changing these sealing grommets are more important than most people think. Every cubic inch of air lost through these grommets lowers the burn temperature and raises the CO level  These parts should be replaced any time you have the burner out. We also add a syringe with just the right amount of Kluber Isoflex LDS-18 Special A grease you will need to place on the two fuel pump gears. This will save you from buying an $80.00 tube.